26/1201/192

1. 30 Mar 2026

   Received by Barnet

2. 27 Apr 2026

   Decision issued: Lawful

3. 25 Jul 2026

   Added to PlanIndex

The council has decided this application; the published outcome sits in the record above and the decision notice on the council portal carries the detail, including any conditions.

If permission was granted, work must normally begin within three years of the decision. If it was refused, the applicant can appeal within the statutory time limit or submit a revised scheme.

A lawful development certificate is a legal determination, not a planning judgement. It asks the council to confirm either that existing use or works are lawful, often through the passage of time, or that a proposal would not need planning permission at all. The applicant must prove the facts; the merits of the scheme are not considered.

More on lawful development applications in our guide

• 26/1200/HSE Granted

  33 Russell Gardens London NW11 9NJ

  Single storey rear extension with sukkah roof and 1no. roof lantern

  30 Mar 2026 0m away Householder
• 26/1199/HSE Granted

  33 Russell Gardens London NW11 9NJ

  Conversion of the existing garage into habitable room and relocation of the front entrance

  29 Mar 2026 0m away Householder
• 26/1437/HSE Awaiting decision

  3 St Georges Close London NW11 0LT

  Part single, part two storey side and rear extension with sukkah roof, including conversion of the existing garage into habitable room, insertion of window to replace garage door

  20 Apr 2026 155m away Householder
• 26/1078/HSE Awaiting decision

  3 St Georges Close London NW11 0LT

  Part single, part two storey rear extension with associated raised platform and rear access steps to garden level. Demolition of existing rear dormer window

  20 Mar 2026 155m away Householder
• 26/1079/HSE Awaiting decision

  3 St Georges Close London NW11 0LT

  Alterations to existing roof including crown roof, side and rear dormer window and 2no. front facing rooflights

  20 Mar 2026 157m away Householder
• 26/2606/CON Awaiting decision

  Rear Of Sage Court 200-210 Golders Green Road London NW11 9AQ

  Submission of details of condition 4 (Materials) pursuant to planning permission 22/5000/FUL dated 22/05/23

  10 Jul 2026 197m away Conditions

• 26/2836/192 Awaiting decision

  20 Derwent Avenue Barnet EN4 8LX

  Roof extension involving rear dormer window with juliette balcony

  31 Jul 2026 Lawful development
• 26/2815/192 Awaiting decision

  18 Boyne Avenue London NW4 2JN

  Roof extension involving rear dormer window and 2no. front facing rooflights

  30 Jul 2026 Lawful development
• 26/2824/192 Awaiting decision

  41 Greenway Close London N20 8ES

  Erection of a rear outbuilding

  30 Jul 2026 Lawful development
• 26/2809/192 Awaiting decision

  43A Clifford Road Barnet EN5 5PD

  Single storey rear extension following the demolition of existing canopy

  29 Jul 2026 Lawful development
• 26/2806/192 Awaiting decision

  14 Lincoln Road London N2 9DL

  Roof extension involving 1no. rear dormer window over main roof with juliette balcony and 1no. rear dormer over outrigger roof and 3no. front facing rooflights. Alterations to existing lean-to to form rear extension with flat roof with parapet walls and 1no. skylight. Alterations to fenestration and doors

  29 Jul 2026 Lawful development